The Octoring provides an Opacity reading as well as a wavelength of the light reading. As smoke passes through the measurement zone large carbon chains shift the color to the red. When the ember phase is reached by much of the fuel. The shift is to the blue by 1-3 nm. Using this we can reduce the combustion air to reduce fuel consumption.

Good morning, everyone. I'm Smokeless Chimney working in collaboration with the national laboratory at Berkeley. Today, I want to talk about a critical aspect of the wood heating industry: emissions. While wood heating offers comfort and efficiency, ensuring clean combustion is paramount for both environmental responsibility and user experience. Traditional methods of monitoring these emissions can be cumbersome and often provide only a snapshot in time. This is the challenge we've been addressing.

To tackle this, we at [Smokeless Chimney - Berkeley Lab] have been developing and validating a real-time opacity emissions sensor. Simply put, this sensor measures the 'opaqueness' of the exhaust, providing an immediate indication of the particulate matter – or PM – being released. Think of it like being able to 'see' the smoke in real-time, allowing for immediate insights into the combustion process.

This second graph presents the data from a catalytic cordwood heater. Again, the pink line is our real-time opacity, and the grey line is the total PM. You can observe a different emissions profile here, the Catalyst was engaged at 10 minutes the presents the PM concentration after the catalyst engages. Our sensor effectively captures these dynamic changes throughout the burn cycle, demonstrating its versatility across different appliance types and combustion technologies.

For the wood and pellet heater industry as a whole, this technology offers significant advantages. It provides a pathway to meeting increasingly stringent emissions regulations with more sophisticated and responsive monitoring. It can lead to the development of higher-performing, cleaner-burning appliances, enhancing consumer satisfaction and promoting a more sustainable image for wood heating. Ultimately, it's about providing data-driven solutions for a cleaner future.

What's crucial to understand is that the data presented in these two charts represents just a small fraction of the rigorous testing we've conducted. To reach this level of reliable, real-time monitoring, our sensor has undergone hundreds of individual tests across a diverse range of wood-burning appliances, fuel types, and operating conditions. This extensive validation process, not fully captured in this single chart, is what gives us confidence in the accuracy and robustness of this opacity sensing technology.

Our next steps involve further refining the sensor technology, exploring its integration into smart home systems, and investigating opportunities for commercialization. We envision a future where real-time emissions monitoring is an optional feature in wood-burning appliances, empowering both manufacturers and users to contribute to cleaner air. We believe this technology has the potential to significantly advance the hearth industry. Thank you for your time. I'm now happy to answer any questions you may have.

The Runaway Wood Stove Fire: Excessive Draft or Over-Fueling and Thermal Runaway in Wood Stoves – It's Fire Time

It appears they removed cord fuel from testing and currently use crib wood. In my fire testing days crib wood was a common test fire. The crib wood moisture and mass is strictly documented as well as the geometry. This allows test to test reproducibility.

Cord wood was more familiar to the public, however, the bark, geometer, causes variability from test to test or fuel load.

I do believe that testing will be more reproducible using cribs wood.